Tempo version 11.000

• Ephemeris:
  • The CfA PEP solar system ephemeris is no longer supported.
  • All output is in J2000 coordinates, although B1950 may be used for input.
  • The JPL ephemerides are now read directly in the format provided by JPL.
  • A systematic error in use of TDB-TT corrections when referencing the ephemeris has been corrected.
  • DE200 and DE405 ephemerides for years 1950-2050 are supplied with the standard Tempo distribution, but they could easily be supplemented by other JPL-format ephemerides.
• A new free-format input file format has been added:
  • Header information and TOAs may be in separate files or in a single file.
  • Parameters are identified by keyword.
  • Parameters not previously available for input are now allowed (F0, F1, F2, F3, Xdot, DMCOFx, etc.)
  • Final parameters are output in a file with the same format as the input files.
  • Comments and blank lines are allowed throughout the files.
• Old-style files with fixed-format headers may still be used (`-o' command-line option).
• The format of tempo.lis has been changed to emphasize rotation frequencies rather than periods.
• The treatment of proper motions and parallax has been made more rigorous. As part of this, a radial velocity term is introduced.
• There is an option to compute parameters corrected for motion of the pulsar (`Shklovskii' effect).
• Internal 1966 day numbers have been eliminated. They are still allowed in input files for backwards compatability.
• A new binary model (DD+) accounts more accurately for orbital precession due to spin-orbit coupling.
• The ephemeris prediction system (`tz') has been modified:
  • Pulsar names may have up to 10 characters.
  • Pulsar parameters may be spread among many files (psrname.par).
  • Absolute phase calculations have been improved.
  • A doppler-shift factor has been added to the output.
• Confiuration file tempo.cfg has been revamped.